Added the release notes MD file and corresponding node entry in the TOC.html file

Author: DeepakRajSundar

winui/Release-notes/v31.2.16.md

@@ -0,0 +1,43 @@
+---
+title: Essential Studio® for WinUI Release Notes - v31.2.16
+description: Learn here about the controls in the Essential Studio® for WinUI Weekly Nuget Release - Release Notes - v31.2.16
+platform: winui
+documentation: ug
+---
+
+# Essential Studio® for WinUI - v31.2.16 Release Notes
+
+{% include release-info.html date="December 02, 2025"  version="v31.2.16" passed="7150" failed="0" %}
+
+{% directory path: _includes/release-notes/v31.2.16 %}
+
+{% include {{file.url}} %}
+
+{% enddirectory %}
+
+## Test Results
+
+| Component Name | Test Cases | Passed | Failed | Remarks |
+|---------------|------------|--------|--------|---------|
+| SfAutoComplete | 31 | 31 | 0 | All Passed |
+| SfAvatarView | 261 | 261 | 0 | All Passed |
+| SfBadge | 187 | 187 | 0 | All Passed |
+| SfBarCode | 293 | 293 | 0 | All Passed |
+| SfCalendar | 114 | 114 | 0 | All Passed |
+| SfCalendarDatePicker | 260 | 260 | 0 | All Passed |
+| SfCalendarDateRangePicker | 174 | 174 | 0 | All Passed |
+| SfCartesianChart | 1344 | 1344 | 0 | All Passed |
+| SfColorPalette | 53 | 53 | 0 | All Passed |
+| SfCombobox | 100 | 100 | 0 | All Passed |
+| SfDatePicker | 82 | 82 | 0 | All Passed |
+| SfKanban | 1335 | 1335 | 0 | All Passed |
+| SfLinearGauge | 1184 | 1184 | 0 | All Passed |
+| SfPolarChart | 88 | 88 | 0 | All Passed |
+| SfRangeSlider | 149 | 149 | 0 | All Passed |
+| SfRating | 44 | 44 | 0 | All Passed |
+| SfRibbon | 50 | 50 | 0 | All Passed |
+| SfScheduler | 1099 | 1099 | 0 | All Passed |
+| SfSegementedControl | 50 | 50 | 0 | All Passed |
+| SfShadow | 41 | 41 | 0 | All Passed |
+| SfSlider | 139 | 139 | 0 | All Passed |
+| SfTimePicker | 72 | 72 | 0 | All Passed |